Commit 51a6b0c5 authored by Bodo Stroesser's avatar Bodo Stroesser Committed by Linus Torvalds

[PATCH] uml: s390 preparation, sighandler interface abstraction

s390 passes parameters in registers.  So the only safe way to find out the
address of signal context, error-address and error-type (trap_no), which are
passed to signal handlers as parameters, is to declare these parameters.

So I inserted an subarch-specific macro which holds the declaration of
parameters for signal handlers.
Signed-off-by: default avatarBodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: default avatarJeff Dike <jdike@addtoit.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 5fd861b6
......@@ -8,6 +8,8 @@
#include <signal.h>
#define ARCH_SIGHDLR_PARAM int sig
#define ARCH_GET_SIGCONTEXT(sc, sig) \
do sc = (struct sigcontext *) (&sig + 1); while(0)
......
......@@ -6,6 +6,8 @@
#ifndef __X86_64_SIGNAL_H_
#define __X86_64_SIGNAL_H_
#define ARCH_SIGHDLR_PARAM int sig
#define ARCH_GET_SIGCONTEXT(sc, sig_addr) \
do { \
struct ucontext *__uc; \
......
......@@ -8,7 +8,7 @@
#include "mode.h"
#include "sysdep/signal.h"
void sig_handler(int sig)
void sig_handler(ARCH_SIGHDLR_PARAM)
{
struct sigcontext *sc;
......@@ -19,7 +19,7 @@ void sig_handler(int sig)
extern int timer_irq_inited;
void alarm_handler(int sig)
void alarm_handler(ARCH_SIGHDLR_PARAM)
{
struct sigcontext *sc;
......
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